Molybdenum Disulphide

Molybdenum Disulphide (MoS2) is a lubricant grade of molybdenum which is available in four grades: Large Particle, Technical, Technical Fine and Super Fine.

Typical MoS2 content (calculated average) is 98.5%

Specification

Large Particle

Technical

Technical Fine

Super Fine

Median Particle Size D50 (Microns

20.0 – 30.0

5.0 – 15.0

3.0 – 6.0

1.3 – 1.5

Acid Insoluble % (max)

0.50

0.50

0.50

0.50

MoO3 %

0.05

0.05

0.05

0.10

Iron % (max)

0.15

0.15

0.15

0.15

Water % (max)

0.05

0.08

0.08

0.15

Oil % (max)

0.05

0.05

0.40

0.4

Carbon % (max)

0.50

0.50

0.50

0.50

Acid Number

0.10

0.10

0.40

2.50

The term Acid Number can be contextually defined as the quantity of potassium hydroxide (measured in mg)
required to neutralise 1 gram of Molybdenum Disulphide.
It is determined at the time of production. Prolonged storage will result in slight oxidation, which will produce an increase in acid number.
The smaller particle size grades are more susceptible to surface oxidation.